Patent GB-196989-A (GB)
Abstract: 196,989. Guhl, R. Jan. 30, 1922 Postmarking and stamp-cancelling machines; rotary machines; counting- apparatus; number-printing apparatus. - A rolling stamp adapted to print impressions to replace postage, revenue, insurance, and like stamps comprises a printing-roller 5, vertically movable within a casing 1 and adapted to be lowered into printing position against the action of a spring 18 by means of toggle levers 10, 11 and held there by the link 10 assuming a vertical position. Mechanisms are also described for locking the roller 5 after each complete rotation and after a determined part rotation. In the form shown in Figs. 2 and 8<a>, the mechanism is carried by one part of the casing, the other part being attached by hooks engaging lugs and by screws carrying lead The roller 5 is mounted in supports 6 suspended from the link 10. On being depressed the lever 11 engages a bolt 33 pressed upwardly by a spring 38 and slidably guided in a fixed sleeve by means of a cross pin 36 on the bolt engaging slots in the sleeve. In the depressed position the hooked end of a pawl 20 is forced by a spring into a notch in the bolt 33 so as to hold the latter. If one impression only is to be printed a lever 22 on a shaft 8 revolved by gearing from the roller 5 strikes against a bell crank 23 so that a tappet 25 carried thereby disengages the pawl 20 whereby the bolt 33 is released and in rising under the action of the spring 38 returns the levers 10, 11 to normal positions. Should the device be required for continuous use a knob 28 on the upper end of a spring-raised rod 26 is turned so that an arm 27 on its lower end raises the lever 23 out of the path of the lever 22. An arm 12 on the shaft 8 engages in its rotation a pivoted lever 13 the forked end 14 of which embraces the actuating arm 15 of a visible counter. The number or total value of the stamps printed may be recorded by a printing-counter comprising number wheels 46, Fig. 8<a>, mounted on a shaft 49, the actuation being effected by studs 47 on the end wheel 46<1> engaging a fixed projection 48. The roller 5 may be inked by a roller 16, Fig. 2, spring-pressed against an ink pad 17, A cancellation mark may be printed in front of, behind, or at the side of the stamp by means of a roller a, Fig. 9, mounted in supports b suspended by pivoted hooks g from a rod i. The latter is carried by a link f depending from a pivoted lever m adapted to be depressed by the lever 11 so as to lower the roller a into printing position. The roller a is inked by a roller e and is mounted on a sleeve c slidable on a shaft d so that in case more than one roller 5 is provided in the casing n the cancelling device may be moved into various lateral positions wherein the hooks g engage appropriate grooves in the shaft i. Alternatively several cancelling- rollers may be mounted on the shaft i. The roller a may be driven from the roller 5 by gears on both rollers meshing with an intermediate. gear wheel q carried by an arm r. Fig. 11 shows a device for limiting the rotation of the roller 5 to a determined angle corresponding to a square or section of the printed surface. A disc d" carried by a plate b causes the latter to slide vertically against the action of a spring m<1> to a position determined by stops q when the device is laid on the surface. A pivoted lever e<1> carried by the plate b<11> and pressed against a stop g<1> by a spring f<1> lies in the path of stops r on the roller 5, the distance between the stops corresponding to the required spacing. Each stop oscillates the lever e<1> so that its end engages a lug k<11> on a bracket k<1> and swings it about a pivot i<1> so that a second lug s meets a lug t on the lever e<1> and locks the bracket against further movement. The stop r subsequently engages the lug k<11> whereby further rotation of the member 5 is prevented. On raising the device off the surface, the spring m<1> returns the plate b<11> to normal position and a spring n<1> returns the bracket k<1>, thus releasing the stop r.